Monitor base



FIG. 1 is a front, top and right side perspective view of a monitor base;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a front, bottom and left side perspective view thereof.

The broken lines shown in FIGS. 1, 2, 5, 6 and 8 illustrate portions of the monitor base that form no part of the claimed design. 

CLAIM We claim the ornamental design for a monitor base, as shown and described. 